Civil Engineering · all questions

Docks And Harbor Engineering
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Q21

Consider the following statements.
(i) Fender is the cushion provided on the face of the jetty for ships to come in contact,
(ii) Slip is the space of water area between two adjacent piers where ships are berthed,
(iii) Pier head is a structure constructed near the tip of a break water near the harbour entrance.
Of the statements

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Q22

Which of the following is a fixed type mooring accessory ?

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Q23

Select the incorrect statement.

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Q24

A ship strikes the berth generally at an angle

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Q25

Which of the following are repair docks ?

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Q26

In multiple point mooring system, vessel is secured to minimum of

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Q27

Which of the following type of sea walls results in greatest protection of shore structures?

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Q28

Assertion A : Large size stones are required in stone revetment in shore protection.
Reason R : Resistance of stone to wave force is proportional to its volume and wave force is proportional to the exposed area of the stone.
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Q29

Assertion A : Intervention of undulations in the sea bed reduces the depth of wave at the section.
Reason R : No wave can have a height greater than the depth of water through which it passes.
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Q30

Assertion A : Marine structures are made specially bulky and strong.
Reason R : Sea insects result in undermining of the hardest and the soundest building material.
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Q31

Assertion A : Basin walls have to be of much grater height than dock walls.
Reason R : Tidal basins are subject to fluctuations of levels due to tidal variations.
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Q32

Assertion A : Depth and width required at the entrance to a harbour are more than those required in the channel.
Reason R : The entrance to a harbour is usually more exposed to waves as compared to the harbour itself.
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Q33

If the maximum spring rise is 2 m and height of the waves expected is 4 m , then the breakwater height above the datum will be

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Q34

As per Stevenson’s empirical formula, the approximate value of the height of the wave in metres is given by (where F is the fetch in km.)

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Q35

At a given port, the fetch is 400 nautical miles, the maximum height of storm wave will be

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Q36

If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by

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Q37

The difference in height between highest high water and lowest low water is called

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